8518731974 has 4 divisors (see below), whose sum is σ = 12778097964. Its totient is φ = 4259365986.

The previous prime is 8518731967. The next prime is 8518731979. The reversal of 8518731974 is 4791378158.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8518731979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129682992 + ... + 2129682995.

It is an arithmetic number, because the mean of its divisors is an integer number (3194524491).

Almost surely, 2^8518731974 is an apocalyptic number.

8518731974 is a deficient number, since it is larger than the sum of its proper divisors (4259365990).

8518731974 is a wasteful number, since it uses less digits than its factorization.

8518731974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259365989.

The product of its digits is 1693440, while the sum is 53.

The square root of 8518731974 is about 92296.9770577563. The cubic root of 8518731974 is about 2042.3256168653.

The spelling of 8518731974 in words is "eight billion, five hundred eighteen million, seven hundred thirty-one thousand, nine hundred seventy-four".